package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.mapper.ApArticleContentMapper;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.service.ApArticleService;
import com.heima.common.constants.ArticleConstants;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.article.dtos.ArticleHomeDto;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.article.pojos.ApArticleConfig;
import com.heima.model.article.pojos.ApArticleContent;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;


@Service
@Transactional
@Slf4j
public class ApArticleServiceImpl  extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService {

    // 单页最大加载的数字
    private final static short MAX_PAGE_SIZE = 50;

    @Autowired
    private ApArticleMapper apArticleMapper;

    @Autowired
    private ApArticleConfigMapper apArticleConfigMapper;

    @Autowired
    private ApArticleContentMapper apArticleContentMapper;

    /**
     * 根据参数加载文章列表
     * @param loadtype 1为加载更多  2为加载最新
     * @param dto
     * @return
     */
    @Override
    public ResponseResult load(Short loadtype, ArticleHomeDto dto) {
        //1.校验参数
        Integer size = dto.getSize();
        if(size == null || size == 0){
            size = 10;
        }
        size = Math.min(size,MAX_PAGE_SIZE);
        dto.setSize(size);

        //类型参数检验
        if(!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_MORE)&&!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_NEW)){
            loadtype = ArticleConstants.LOADTYPE_LOAD_MORE;
        }
        //文章频道校验
        if(StringUtils.isEmpty(dto.getTag())){
            dto.setTag(ArticleConstants.DEFAULT_TAG);
        }

        //时间校验
        if(dto.getMaxBehotTime() == null) dto.setMaxBehotTime(new Date());
        if(dto.getMinBehotTime() == null) dto.setMinBehotTime(new Date());
        //2.查询数据
        List<ApArticle> apArticles = apArticleMapper.loadArticleList(dto, loadtype);

        //3.结果封装
        ResponseResult responseResult = ResponseResult.okResult(apArticles);
        return responseResult;
    }


    /**
     * 保存和修改文章内容+文章配置+文章信息
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult saveArticle(ArticleDto dto) {
        if(dto.getContent()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        ApArticle apArticle=null;
        //如果没有id,则表示新增
        if(dto.getId()==null){
            //1.保存文章信息表
            apArticle=new ApArticle();
            BeanUtils.copyProperties(dto,apArticle);
            apArticleMapper.insert(apArticle);
            //2.保存文章配置
            ApArticleConfig apArticleConfig=new ApArticleConfig(apArticle.getId());
            apArticleConfigMapper.insert(apArticleConfig);
            //3.保存文章内容
            ApArticleContent apArticleContent=new ApArticleContent();
            apArticleContent.setArticleId(apArticle.getId());
            apArticleContent.setContent(dto.getContent());
            apArticleContentMapper.insert(apArticleContent);
        }else{//修改文章+内容
            //1.先根据id去查询文章，在修改
            apArticle = apArticleMapper.selectById(dto.getId());
            if(apArticle!=null){
                apArticleMapper.updateById(apArticle);
                //先查文章内容，在修改
                ApArticleContent apArticleContent = apArticleContentMapper.selectOne(Wrappers.<ApArticleContent>lambdaQuery()
                        .eq(ApArticleContent::getArticleId, apArticle.getId()));
                apArticleContent.setContent(dto.getContent()); //给id设置值
                apArticleContentMapper.updateById(apArticleContent);
            }
        }

        //4.返回文章id
        ResponseResult responseResult=ResponseResult.okResult(apArticle==null?"":apArticle.getId());
        return responseResult;
    }
}
